Adjustable road bar assembly

ABSTRACT

Load bar structure for use in storage and/or shipping racks for sheet metal or similar articles, such as automobile fenders, hoods, doors or other parts, where the parts must be immobile for the extent of shipping. A shipping rack includes a top and bottom frame joined by vertical corner members, and horizontal end bars which extend between the corner members at suitable heights. An elongated three part load bar is provided in the top and bottom frames to adjustably position and hold the stored articles at the top and bottom edges thereof. The bar includes a slot to receive various dunnage materials used to hold the wares in place.

Mar. 12, 1974 ADJUSTABLE ROAD BAR ASSEMBLY [75] Inventor: Robert M.Jelinek, Western Springs,

Ill.

[73] Assignee: The Ceco Corporation, Chicago, Ill.

[22] Filed: May 4, 1973 [21] Appl. No.: 357,327

Related U.S. Application Data [62] Division of Ser. No. 150953, June 8,1971, Pat. No,

211/162; 248/1 19 R, 361 A, 361 R 298, 354 R, 327, 284, 346; 280/179 B[56] References Cited UNITED STATES PATENTS 1,266,367 5/1918 Wilson248/284 X J55'J56 155 I Lampert 248/354 R Jordan 248/354 R PrimaryExaminer-Ramon S. Britts Attorney, Agent, or Firm--McDougall, Hersh &Scott [57] ABSTRACT Load bar structure for use in storage and/orshipping racks for sheet metal or similar articles, such as automobilefenders, hoods, doors or other parts, where the parts must be immobilefor the extent of shipping. A shipping rack includes a top and bottomframe joined by vertical corner members, and horizontal end bars whichextend between the corner members at suitable heights. An elongatedthree part load bar is provided in the top and bottom frames toadjustably position and hold the stored articles at the top and bottomedges thereof. The bar includes a slot to receive various dunnagematerials used to hold the wares in place.

7 Claims, 27 Drawing, Figures cab/923L403 Pmzmeum 12 1914 saw 5 as 6storage and/or shipping racks for the transportation of a plurality ofarticles, and more particularly to restraining bars and adjustable barsutilized on the racks to accurately-and safely store and hold thearticles without damage.

The shipping by railroad or truck of sheet metal parts in largequantities is especially important in the automotive industry and othersimilar industries. Shipping racks are utilized to hold, space andprotect the parts which may be of sheet metal of other materials, andvarious means have been used to restrain the load within the rack, suchas plywood, steel bars, built up wooden sections or various types ofrubber or plastic mounted onto steel or wooden bars. The presentinvention relates to a new and improved system of restraining and loadbars which are simple to use and economical and can be reused andadjusted to compensate for design changes in materials being shipped.

Among the objects of the present invention is the provision of alightweight elongated restraining bar utilized in a storage rack along aside thereof to restrain a plurality of articles positioned on the rack.The restraining bar has a releasable spring-loaded latch at each endthereof cooperating with horizontal end bars in the rack to retain thebars in operative position. Also, this bar has a generally T-shaped slotor channel formed on the inner surface and extending longitudinally toreceive suitable dunnage material to hold and cushion the wares inplace. I

Another object of the present invention is the provision of thelightweight elongated restraining bar cooperating with an end bar in astorage rack through a latch at each end of the restraining bar. The endbar has a generally C-shape with the open side of the bar facing theinterior of the rack. The flanges defining the longitudinal slot in theC-shaped bar are notched at spaced intervals along their length toreceive the latch I means in the end of the restraining bar.

1 A further object of the present invention is the provision ofarestraining bar having a spring-biased swinging latch member at'each endthereof. The latch includes a forward flange with a downturned laterallyextending lower edge and-an upper lateral edge, a pivot hub rearwardlyof the flange and an upwardly extending handle adapted to be manuallygrasped and rotated to release the latch. Suitable spring means biasesthe latch to its latched position.

The present inventionalso comprehends the provision of a restraining barhaving a two-part latch cooperating with a horizontal end bar. Thislatch includes a lower stationary latch member terminating in a T-shaped outer end received in a lower notch in the end bar, and an upperreciprocable latch member adapted to be projected into an aligned uppernotch in the end bar. The upper edge of the restraining bar is cut awayto expose a vertical handle portion integral with the upper latchmember.

' The present invention further comprehends the provision of anadjustable load bar assembly to be utilized in either the bottom frameand/or top frame of the shipping rack. The adjustable load bar includesa bottom load bar secured in the frame of the shpping rack and extendinglongitudinally thereto, an intermediate swivel housing bar adapted foradjustment relative to the bottom bar, and a swivel retainer releasablysecured and angularly adjustable relative to the intermediate bar. Inview of both the height and angular adjust ment, the bar assembly can bereused with any adjustments being made based on the design changes ofthe article being stored or shipped.

Further objects are to provide a construction of max imum simplicity,efficiency, economy and ease of assembly and operation, and such furtherobjects, advantages and capabilities as will later more fully appearandare inherently possessed thereby.

In the drawings:

FIG. 1 is a perspective view of a storage and/or shipping rack havingthe restraining bars and the adjustable load bars of the presentinvention utilized thereon.

FIG. 2 is an enlarged partial side elevational view of one embodiment ofrestraining bar with the end bar in cross section taken on the line 2-2of FIG. 1.

FIG. 3 is a view similar to FIG. 2 but showing the latch'swung tounlatched position.

FIG. 4 is a vertical cross sectional view taken on the line 4-4 of FIG.3.

FIG. 5 is a partial top plan view of the bar and latch of FIG. 2.

FIG. 6 is a perspective view of the latch and spring of FIG. 2.

FIG. 7 is a partial side elevational view of the restraining bar with analternate form of swing latch.

FIG. 8 is a vertical cross sectional view taken on line 8-8 of FIG. 7.

FIG. 9 is a partial top plan view of the bar and latch of FIG. 7.

FIG. 10 is a perspective view of the latch and spring of FIG. 7.

FIG. 11 is a partial side elevational view of anotheralternate'embodiment of swinging; latch applied to the restraining bar.

FIG. 12 is a vertical cross sectional view taken on the line 12-12 ofFIG. 11.

FIG. 13 is a partial top plan view of the bar and latch of FIG. 11.

FIG. 14 is a perspective view of the latch and springs of FIG. 11. V

FIG. 15 is an enlarged partial top plan view of the swinging latch ofFIG. 11.

FIG. 16 is a partial side elevational view of a restraining bar andreciprocable latch.

FIG. 17 is a vertical cross sectional view taken on the line l7-17 ofFIG. 16.

FIG. 18 is a horizontal cross sectional view taken on the line 18-18 ofFIG. 17.

FIG. 19 is a vertical cross sectional view taken on the line 19-19 ofFIG. 18.

FIG. 20 is a vertical cross sectional view taken on the line 2020 ofFIG. 16.

FIG. 21 is an end elevational view of an adjustable load bar assemblyutilized in the rack of FIG. 1.

FIG. 22 is a view similar to FIG. 21 but showing a second verticalheight adjustment.

FIG. 23 is a partial and elevational view similar to FIG. 21 but showinga different angular adjustment.

FIG. 24 is an end elevational view of the intermediate swivel housingbar.

FIG. 25 is a partial side elevational view of the bar of FIG. 24.

FIG. 26 is an end elevational view of the swivel retainer.

FIG. 27 is a partial side elevational view of the swivel retainer.

Referring more particularly to the disclosure in the drawings whereinare shown illustrative embodiments of the present invention, FIG. 1discloses a storage and- /or shipping rack 10 for retaining and storinga plurality of articles 11, such as sheet metal automobile parts, withthe rack including a top frame formed of longitudinal members 12 andlateral members 13, a bottom frame formed of longitudinal members 14 andlateral members 15, and four vertical corner members 16 connecting thetop and bottom frames together.

The bottom frame is provided with feet 17 at the four corners to raisethe rack 10 off the supporting surface, and horizontal end bars 18 aresuitably secured to the corner members 16 at any desired height tocooperate with elongated restrainingbars 19. The vertical corner members16 may have a series of spaced openings 21 therein to receive securingmeans to adjustably mount the end bars thereon. Each end bar 18, as seenin FIGS. 2-5 are of a general C-shape in vertical cross section with asolid rear wall 22 and top and bottom walls 23 terminating in inturnedupper and lower flanges 24 and 25, respectively. The flanges are formedwith horizontally spaced pairs of vertically aligned upper and lowernotches 26 and 27 formed in the flanges 24 and 25, respectively.

The elongated restraining bar 19 is preferably formed of' extrudedaluminum or other lightweight and strong material and, as seen in FIG.4, is formed in a generally tubular shape having an outer wall 28, topand bottom walls 29 and 30, and an inner wall 31 provided with a centrallongitudinal slot 32 therein. A transverse web 33 connects the outerwall 28 with a U-shaped channel 34, and the channel cooperates with theedges 35,35 of the inner wall 31 to form a generally T-shaped slot 36.The end of the web 33 is cut away at 37 (FIGS. 2 and 3) adjacent theends 38 of the bar to allow for a latching means 39 to be mountedtherein.

A pivot pin 41 (FIG. extends through aligned openings in the walls 28and 31 and is secured in the bar 19 by any suitable means. The latchingmeans, as more clearly seen in FIG. 6, includes a swinging latch 42having a hub 43 with an opening 44 receiving the pivot pin 41, aforwardly projecting latching flange 45 having a lower lateral latchhook 46 and an upper spaced lateral restraining arm 47 with a downwardlycurved edge 48. Extending generally upward from the hub is a handle 49extending through an elongated opening 51 (FIG. 5) formed in the topwall 29. A coil spring 52 has the coils 53 thereof encompassing the hub43, a rearward arm 54 engaging the edge of the web 33, and a forward arm55 terminating in an inverted U-shaped portion 56 engaging and generallyencompassing the rear surface of the handle 49 (FIGS. 4 and 5).

In use, the shipping rack is loaded with the articles 11 for storage orshipment and the restraining bars 19 are prepared by adding a rubber,plastic or other suitable du'nnage material (not shown) having agenerally T-shaped flange or edge to be inserted in the slot 36 in theinner wall 31 of the bar. The latch 29 shown in FIGS. 2-6 is a left-handlatch, and a right-hand latch 39 restraining bar 19. The bar 19 ispositioned in the rack 10 by latching it to the end bars 18,18 so thatthe dunnage material engages and cushions the articles 11.

To latch the bar 19, the handle 49 is manually rotated in the directionof the arrows A in FIG. 3 to rotate the latch against the force of thespring 52 by urging the spring arm 55 rearwardly. The bar is then movedalong the end bar 18 to insert the latch hook 46 in the slot 22 (FIG. 3)of the bar 18 until the dunnage material engages the articles 11. Thenthe handle 49 is released and the spring 52 urges'the latch to rotate ina counterclockwise direction so that the latch hook 46 enters andengages a lower notch 27 while the lateral restraining arm 47simultaneously enters the vertically aligned upper notch 26 (FIG. 2).The bar 19 is now restrained against both longitudinal and lateralmovement. To remove this bar, the latch is rotated clockwise to theposition of FIG. 3 to unlatch the bar 19 from the end bar 18.

FIGS. 7-10 disclose an alternate embodiment of swing latch 57 utilizedwith the identical restraining bar 19 for the shipping rack 10 havingend bars 18. The latch is generally similar to that shown in FIGS. 2-6having a hub 58 with an opening 59 to receive the pivot pin 41, aforwardly projecting latching flange 61 with a lower latch hook 62 andan upper lateral arm 63 with a downturned front edge 64, and an upwardlyextending handle 65 offset at 66 and provided with a rearward projectionforming a shoulder 67 below the offset (FIG. 10).

A coil spring 68 has the coils 69 encompassing the hub 58, a rear arm 71adapted to engage the end of the web 33 and a forward arm 72 having alateral offset 73 engaging the shoulder 67. The arm 72 extends upwardfrom the offset 73 through the slot 51 (FIGS. 7 and 9) in the bar topwall 29 and has a bend 74 merging into a slightly downwardly inclinedportion 75 terminating in a downwardly and rearwardly extending bend 76adapted to engage the rear edge 77 of the slot 51. This latch 57operates in the same manner as previously described for the latch 42except that upon clockwise rotation of the handle 65, the inclinedspring portion 75 will bow upwardly to yieldably resist the handlerotation.

FIGS. 1 1-15 disclose a second alternate embodiment of swinging latch 78for the restraining bar 19 to engage an end bar 18. This latch also isgenerally similar to that shown in FIGS. 2-6 and includes, as shown inFIG. 14, a hub 79 with an opening 81 for the pivot pin 41, a for-.wardly extending flange 82 having a lower latch hook 83 and an upperlateral arm 84 with a curved front edge 85, and an upwardly extendinghandle 86 having an enlarged portion 87 thereon with a pair of tabs88,88, one

on each side and having inclined surfaces 89,89 (FIG.

15) to form sharp forward shoulders. The coil spring 52 is identical tothat shown in FIGS. 2-6 and has the same reference numerals, includingthe coils 53 encompassing the hub 79, the rear arm 54 abutting the inneredge of the web 33, and the front arm 55 terminating in a U- shapedportion 56 engaging and partially encompassing the rear edge of thehandle 86 and urging it to rotate in a counterclockwise direction.

A second separate flat leaf spring 91 (FIG. 14) has an inclinedbodyportion 92 terminating in a forward downturned end 93 having a pair ofparallel arms 94,94 at right angles thereto; each arm having an opening95 to receive a tab 88 when the end 93 and arms 94,94

partially encompass the enlarged portion 87 of the handle 86. The bodyportion 92 has a rear downturned part 96 forming a shoulder'with therear end 97 to engage the rear edge 77 of the slot 51 in the bar 19(FIG. 13). The springs 52 and 91 react upon rotation of the handle 86 ina clockwise direction in substantially the same manner as the spring 68of FIGS. 7-10.

FIGS. 16-20. disclose a second embodiment of restraining bar 98 andlatch assembly therefor. This bar is also preferably formed of extrudedaluminum and has an outer wall 99, a top wall or edge 101, a bottom wallor edge 102, and an inner wall 103 with a central slot defined by thespaced edges 104,104. A pair of spaced webs 105,105 extend between theouter wall 99 and the inner wall 103 to define, with the edges 104,104,a T-shaped slot 106. A pair of spaced guide flanges 107,107 are formedin each hollow tube 108 defined by the walls and the webs for a latchstructure which cooperates with the end bar 18 having the upper andlower vertically aligned notches 26 and 27, respectively, at spacedintervals along the length of the bar.

The latch structure includes a lower stationary latch member 109 havinga body portion 111 received in the guide space between the flanges107,107 and the lower web 105. The body portion is secured by suitablefastening means, such as spring pins 112 extending through openings inthe bar 98 and into suitable recesses 113 in the body portion 111. Thebody portion terminates in an enlarged head 114 which, as seen in FIGS.18 and 19, has a depending lip 115 formed from diverging end surfaces116,116 extending from the upper surface 117 to the lower surface 1 18.The lip 115 is adapted to extend over and below the edge of the notch 27with the lower portions of the end surfaces 116,116 being wider than thenotch.

The upper end of the bar 98 is cut away at 119 to form a slot to receivethe upper reciprocable latch member 121, which has a body portion 122with an up standing handle 123 supported by a flange 124. The

overlapping the edge of the notch. The upper latch body portion 122 isprovided with slots or grooves 125 to receive the guide flanges 107,107and slides on or adjacent to the upper web 105. The central portion ofthe body portion 122 is hollow or slotted at 126 to receive acompression spring 127 yieldably urging the latch member toward the endbar 18. A spring pin 128 is secured in the bar 97 and extends betweenthe walls 99 and 103 and through the hollow 126 at the rear end thereofto engage the rear end of the spring 127 and provide a reaction surfacetherefor.

The body portion 122 terminates at a flat tongue 129 having a laterallyenlarged forward end 131 received in the upper notch 26 and ofsubstantially the same width as the notch. The bar 98 is cut away orslotted in each wall 99 and 103 at 132 to allow for inward movement ofthe enlarged end 131. Suitable dunnage material (not shown) may besecured in the T-slot 106 of the bar 98, and the bar can be assembledonto a shipping rack 10. To assemble the bar onto the end bars 18,18,the reciprocable latch member 121 is manually retracted by the handle123 against the force of the spring 127 and the bar is moved intoengagement with the articles 11 with the head 114 of the lower member109 entering the end bar 18.

With the bar or the dunnage material carried thereby engaging thearticles 11, the member 109 is dropped into a notch 27 with the lip 115within the bar 18 and member 121 is then released to allow the enlargedend 131 to enter the upper notch 26; the upper and lower members 121 and109 cooperating with the notches 26 and 27 to prevent any movement ofthat end of the bar 98. The latch at the opposite end. of the bar 98 isoperated in the same manner for the opposite end bar 18 to latch the bar98 in its operative position. To release the bar 98, the upper latchmembers 121 are retracted and the bar is lifted to disengage the lowerlatch members 109 from the end bars 18, and the bar 98 is removed.

FIGS. 21-27 disclose an adjustable load bar assembly 133 utilized in thebottom frame and/or top frame of the shipping rack 10 to support thearticles 11 thereon. A pair of these assemblies 133 are shown suitablypositioned in the bottom frame of the rack 10 and one assembly in thetop frame of the rack. An assembly includes a bottom load bar 134 (FIGS.21 and 22) that is secured in the rack at its ends to the lateralmembers 15,15 and paralleling the longitudinal members 14. The barincludes a flat base plate 135 having an integral inverted U-shapedchannel extending upward from the plate surface. The channel includesside walls 136,136 connected by a top web 137, and each side wall has aplurality of outwardly extending and slightly upwardly inclinedlongitudinally extending flanges 138. The flanges 138 are equally spacedapart and aligned on each side to form pairs; the base plate havinginclined surfaces 139,139 aligned with the flanges 128. Laterallyextending intermediate members 140,140 secured to the longitudinalmembers 14,14 aid in supporting the bottom load bar in the frame.

An intermediate swivel housing bar 141 (FIGS. 24 and 25) has a base 142and downwardly extending parallel sides 143,143; each side having a pairof inwardly extending and slightly downwardly inclined adjustmentflanges 144 which cooperate with the flanges 138 to provide incrementsof height adjustment of the bar 141 relative to the bottom load bar 134.Formed on the upper surface 145 of the base 142 is an integral generallysemi-circular swivel housing 146 extending upward on one side of thebase 142. The housing includes several longitudinally extending teeth orserrations 147 formed at approximately the mid point of the innerarcuate surface 148 of the housing. Several openings 149 (FIGS. 24 and25) are formed in the housing 146 adjacent the teeth 147 at spacedintervals along the length of the bar 141 for a purpose to be described.

A swivel retainer 151 (FIGS. 26 and 27) includes a longitudinalgenerally cylindrical member 152 formed with a flat upper longitudinalsurface or base 153 having upwardly extending parallel flanges 154. Eachflange terminates in a horizontal flange 155 extending both inwardly andoutwardly of the flange 154 to form a longitudinal T-shaped slot 156.The lower half of the member 152 is formed with a plurality oflongitudinally extending teeth or serrations 157 complementary to theteeth 147 on the housing 146. An arcuate slot 158 is formed in themember 152 at a position angularly dis posed to vertical as seen in FIG.26 to be aligned with I each opening 149 in the housing 146.

To assemble, the intermediate swivel housing bar 141 is slid onto thebottom load bar 134 with the flanges 144,144 interleaved with a pair ofadjustment flanges 138,138 on each side wall 136 to provide properheight adjustment. A slabbed bolt 159 having a T-shaped head 161 isinserted in each opening with the threaded shank of thebolt 159extending beyond the exterior surface of the housing. The head 161 isturned to be inserted in a slot 158 and then rotated 90 to engage theinterior of the member 152. A washer 162 and a nut 163 are assembledonto the bolt 159 to draw the swivel retainer 151 and the swivel housingbar 141 together with the teeth 148 and 157 interengaging. The pluralityof teeth 147 and 157 allow for a multiplicity of angular adjustments ofthe retainer 151 relative to the housing bar 141 from a verticalposition (FIGS. 21 and 22) to a horizontal position (FIG. 23). The bolt159 and nut 163 will clamp the retainer 151 in any of the angularpositions relative to the housing bar 141.

Once the housing bar 141' is assembled at the proper height, either low(FIG. 21), high (FIG. 22) or an intermediate position (not shown)relative to the bottom load bar 134 and the swivel retainer 151 isangularly adjusted relative to the housing bar 141, suitable dunnageinserts 164 to cushion and separate the articles 1 1 are inserted in theT-slot 156 of each swivel retainer 151 and the articles 11 are loaded inthe rack and retained by a plurality of restraining bars 19 or 98. Therack is then ready for storage and/or shipping. Obviously, one or moreload bar assemblies 133 can be used at the bottom and the top of therack 10, and the restraining bars 19 or 98 and their latches are interchangeable. The three members of the load bar assembly 133 are allpreferably formed of extruded aluminum.

I claim:

1. In a shipping rack for storing articles and having a frameworkencompassing the articles, an adjustable load bar assembly forsupporting the articles in the rack including an elongated bottom loadbar suitably positioned in and extending longitudinally in the rack,said load bar having a base and an integral upwardly extending channelmember, an elongated intermediate swivel housing bar having a pair ofdepending parallel sides adapted to encompass said channel member, firstcooperating means on said bottom load bar and said intermediate bar toadjust the height of the intermediate bar relative to the bottom loadbar, an arcuate swievel housing on said intermediate bar, and anelongated swivel retainer including a tubular member and a pair ofparallel flanges integral with the tubular member,

angularity of the swivel retainer relative to said intermediate bar. I

2. In a shipping rack as set forth in claim 1, in which said parallelflanges terminate in perpendicular flanges forming therewith a T-shapedslot adapted to receive and support suitable dunnage material.

3. In a shipping rack as set forth in claim 1, in which said firstcooperating means includes a plurality of equally spaced outwardlyextending longitudinal flanges on each side of the channel member, and apair of inwardly extending longitudinal spaced flanges on each dependingside of the intermediate bar interengaging with the flanges on thechannel member to provide incremental height adjustment of theintermedate bar relative to the bottom bar.

4. In a shipping rack as set .forth in claim 3, in which the pluralityofflanges on the channel member are all slightly upwardly inclined and theflanges on the sides of the intermedate bar are all slightly downwardlyinclined.

5. In a shipping rack as set forth in claim 1, in which said secondcooperating means includes a plurality of longitudinally extending teethon the interior surface of the arcuate swivel housing, a correspondinglarger number of longitudinally extending teeth on the exterior surfaceof the tubular member, and clamping means to interengage the teeth onthe tubular member and the arcuate swivel housing.

6. In a shipping rack as set forth in claim 5, in which said arcuateswivel housing has a plurality of longitudinally spaced openingstherein, and saidtubular member has a plurality of longitudinally spacedangularly disposed slots therein aligned with said openings, and saidclamping means includes a clamping bolt having a head within'the tubularmember and a threaded shank extending through an aligned slot andopening, and a nut threadingly engaging the shank of the bolt.

7. In a shipping rack as set forth in claim 6, in which said bolt has aT-shaped head that passes through the slot in the tubular member and,when rotated 90", engages and clamps the tubular member onto the arcuateswivel housing in a desired position of angular ad-

1. In a shipping rack for storing articles and having a frameworkencompassing the articles, an adjustable load bar assembly forsupporting the articles in the rack including an elongated bottom loadbar suitably positioned in and extending longitudinally in the rack,said load bar having a base and an integral upwardly extending channelmember, an elongated intermediate swivel housing bar having a pair ofdepending parallel sides adapted to encompass said channel member, firstcooperating means on said bottom load bar and said intermediate bar toadjust the height of the intermediate bar relative to the bottom loadbar, an arcuate swievel housing on said intermediate bar, and anelongated swivel retainer including a tubular member and a pair ofparallel flanges integral with the tubular member, and secondcooperating meAns to releasably adjust the angularity of the swivelretainer relative to said intermediate bar.
 2. In a shipping rack as setforth in claim 1, in which said parallel flanges terminate inperpendicular flanges forming therewith a T-shaped slot adapted toreceive and support suitable dunnage material.
 3. In a shipping rack asset forth in claim 1, in which said first cooperating means includes aplurality of equally spaced outwardly extending longitudinal flanges oneach side of the channel member, and a pair of inwardly extendinglongitudinal spaced flanges on each depending side of the intermediatebar interengaging with the flanges on the channel member to provideincremental height adjustment of the intermedate bar relative to thebottom bar.
 4. In a shipping rack as set forth in claim 3, in which theplurality of flanges on the channel member are all slightly upwardlyinclined and the flanges on the sides of the intermedate bar are allslightly downwardly inclined.
 5. In a shipping rack as set forth inclaim 1, in which said second cooperating means includes a plurality oflongitudinally extending teeth on the interior surface of the arcuateswivel housing, a corresponding larger number of longitudinallyextending teeth on the exterior surface of the tubular member, andclamping means to interengage the teeth on the tubular member and thearcuate swivel housing.
 6. In a shipping rack as set forth in claim 5,in which said arcuate swivel housing has a plurality of longitudinallyspaced openings therein, and said tubular member has a plurality oflongitudinally spaced angularly disposed slots therein aligned with saidopenings, and said clamping means includes a clamping bolt having a headwithin the tubular member and a threaded shank extending through analigned slot and opening, and a nut threadingly engaging the shank ofthe bolt.
 7. In a shipping rack as set forth in claim 6, in which saidbolt has a T-shaped head that passes through the slot in the tubularmember and, when rotated 90*, engages and clamps the tubular member ontothe arcuate swivel housing in a desired position of angular adjustment.